Isolation Of Microbes From Dairy Effluent And Treated With Sewage
Keywords:
Dairy effluent; Bacterial isolation; Sewage bioremediation; Physicochemical analysis; HPLC..Abstract
Dairy industries generate large quantities of wastewater containing high concentrations of organic matter and nutrients, which contribute to environmental pollution if discharged without proper treatment. The present study was carried out to isolate and identify bacterial species from dairy effluent and evaluate their potential in the treatment of sewage. Dairy effluent samples were collected from Milma Industry, Thiruvananthapuram, and bacterial isolates were obtained by serial dilution and culture techniques. The isolates were identified using morphological, Gram staining, biochemical, and physiological characteristics. Among fifty bacterial colonies, twelve isolates were selected and tentatively identified as Lactobacillus, Pseudomonas, Arthrobacter, Escherichia, Bacillus, Microbacterium, Micrococcus, Azotobacter, Vibrio, Pasteurella, Staphylococcus, and Bifidobacterium. Sewage samples were analyzed for physicochemical parameters before and after microbial treatment. The treatment reduced turbidity, salinity, electrical conductivity, total solids, total dissolved solids, and total suspended solids, indicating the biodegradation potential of the selected isolates. HPLC analysis further confirmed the presence of degradation-associated compounds after treatment. The findings demonstrate that indigenous bacterial isolates from dairy effluent can effectively improve sewage quality and may serve as promising candidates for environmentally friendly and cost-effective wastewater bioremediation..
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